Mengkukuo

Mengkukuo was a puppet state of Japan which existed from 1939 to 1945. The state was founded in the Inner Mongolia region of China, and Prince Demchugdongrub served as the head of state of Mengkukuo during its short existence. Mengkukuo was invaded by the Soviet Union's Red Army at the end of World War II in August 1945 and conquered, bringing an end to the small state.